Patent SG-11201407192P-A (SG)
Title: Method of cladding and fusion welding of superalloys using composite filler powder
Inventor: GONCHAROV ALEXANDER B
IPC: B23K35/22
Filed: 2012-12-05
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 12 June 2014 (12.06.2014) WIPOIPCT (10) International Publication Number WO 2014/085892 A1 (51) International Patent Classification: B23K 26/34 (2014.01) B23K 9/04 (2006.01) B23K35/22 (2006.01) (21) International Application Number: PCT/CA2012/001118 (22) International Filing Date: (25) Filing Language: (26) Publication Language: 5 December 2012 (05.12.2012) English English (71) Applicant: LIBURDI ENGINEERING LIMITED [CA/CA]; 400 Hwy. 6 North, Dundas, Ontario L9H 7K4 (CA). (72) Inventors: GONCHAROV, Alexander B.; 10 Tefley Road, Toronto, Ontario M2M 1C4 (CA). LIBURDI, Joseph; 1145 Brock Road, R.R. #4, Dundas, Ontario L9H 5E4 (CA). LOWDEN, Paul; 73 Johnston Avenue, Cam­ bridge, Ontario N3C 1N3 (CA). HASTIE, Scott; 88 Ar­ lington Avenue, Toronto, Ontario M6G 3L1 (CA). (74) Agent: KOCH, Mark; Mark A. Koch Professional Cor­ poration, 583 Main Street East, Hamilton, Ontario L8M 1J4 (CA). (81) Designated States (unless otherwise indicated, for every kind of national protection available)'. AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available)'. ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG). Declarations under Rule 4.17 : — as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(H)) — of inventorship (Rule 4.17(iv)) Published: — with international search report (Art. 21(3)) (54) Title: METHOD OF CLADDING AND FUSION WELDING OF SUPERALLOYS USING COMPOSITE FILLER POWDER CJ o\ 00 00 o o CJ o & (57) Abstract: The present concept is a method of cladding and fusion welding of superalloys and includes the steps of firstly ap­ plication of composite filler a powder that comprises 5- 50% by weight brazing powder which includes melting point depressants, and 50-95% by weight high temperature welding powder, to a superalloy base material. Secondly there is simultaneous heating of the base material and the composite filler powder by a welding heat source that is movable relative to the base material. There is heating to a temperature that will fully melt the brazing powder and at least partially melt the high temperature welding powder and also melt surface layer a of the base material, thereby forming a weld pool. Thirdly upon solidification and cooling of the weld pool, there is coalescence between weld a bead and the base material.